User manual

Publication CNET-UM001C-EN-P - November 2005
4-4 Control I/O
For I/O modules the available communication formats depend on the module
type. This table describes the different communication formats for general
module types.
Table 4.2 Communication Format for Module Types
See the online help in RSLogix 5000 programming software for specific
communication formats per I/O module.
If You Have This Type
of I/O Module
And Want Select a Communication Format That Specifies
digital module a rack optimized connection Rack Optimization
a direct connection or to use specialty
features of the module, such as
diagnostics, timestamps, or electronic
fuses
or
to only listen to data from the module
The data your controller needs from the I/O module. For example, if
your application uses a 1756-IA16I module in a remote chassis that
must provide timestamped input data, you should select the CST
Timestamped Input Data communication format.
A Listen Only communication format that matches the data the I/O
module is broadcasting to other controllers.
analog module a direct connection or to use specialty
features of the module, such as
diagnostics, timestamps, or electronic
fuses
or
to only listen to data from the module
The data your controller needs from the I/O module. For example, if
your application uses a 1756-OF6CI module in a remote chassis that
must provide floating point output data, you should select the Float
Data communication format.
A Listen Only communication format that matches the data the I/O
module is broadcasting to other controllers.